My first job was at a movie rental store that just recently had the very last location close down in the US.

The way our account numbers worked was that there was a series of numbers to denote our location, and the last five digits were the customer. Our store was 291299, and my account was *****, so my entire number was 291299*****. But there were a few combinations that would never get used, so some employees at some point made fake accounts with joke info.

11111 was Homer Simpson with his address in Springfield.

66666 was Lucifer in Hell, and the phone number was, of course, all sixes.

22222 was Bruce Wayne in Gotham, and he had Dick Grayson marked as able to rent on his account.